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<div class="main-content" data-page-type="member" id="content" pageids="exposed-dao::org.jetbrains.exposed.dao/EntityClass/memoizedTransform/org.jetbrains.exposed.sql.Column[TypeParam(bounds=[kotlin.Any?])]#org.jetbrains.exposed.sql.ColumnTransformer[TypeParam(bounds=[kotlin.Any?]),TypeParam(bounds=[kotlin.Any?])]/PointingToDeclaration//-358360235">
  <div class="breadcrumbs"><a href="../../index.html">exposed-dao</a><span class="delimiter">/</span><a href="../index.html">org.jetbrains.exposed.dao</a><span class="delimiter">/</span><a href="index.html">EntityClass</a><span class="delimiter">/</span><span class="current">memoizedTransform</span></div>
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    <h1 class="cover"><span>memoized</span><wbr><span><span>Transform</span></span></h1>
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  <div class="platform-hinted " data-platform-hinted="data-platform-hinted"><div class="content sourceset-dependent-content" data-active="" data-togglable=":exposed-dao:dokkaHtmlPartial/main"><div class="symbol monospace"><span class="token keyword">fun </span><span class="token operator">&lt;</span><a href="memoized-transform.html">Unwrapped</a><span class="token punctuation">, </span><a href="memoized-transform.html">Wrapped</a><span class="token operator">&gt; </span><a href="../../../exposed-core/org.jetbrains.exposed.sql/-column/index.html">Column</a><span class="token operator">&lt;</span><a href="memoized-transform.html">Unwrapped</a><span class="token operator">&gt;</span><span class="token punctuation">.</span><a href="memoized-transform.html"><span class="token function">memoizedTransform</span></a><span class="token punctuation">(</span><span class="parameters "><span class="parameter ">transformer<span class="token operator">: </span><a href="../../../exposed-core/org.jetbrains.exposed.sql/-column-transformer/index.html">ColumnTransformer</a><span class="token operator">&lt;</span><a href="memoized-transform.html">Unwrapped</a><span class="token punctuation">, </span><a href="memoized-transform.html">Wrapped</a><span class="token operator">&gt;</span></span></span><span class="token punctuation">)</span><span class="token operator">: </span><a href="../-entity-field-with-transform/index.html">EntityFieldWithTransform</a><span class="token operator">&lt;</span><a href="memoized-transform.html">Unwrapped</a><span class="token punctuation">, </span><a href="memoized-transform.html">Wrapped</a><span class="token operator">&gt;</span></div><p class="paragraph">Returns a <a href="../-entity-field-with-transform/index.html">EntityFieldWithTransform</a> delegate that will cache the transformed value on first read of this same stored <a href="memoized-transform.html">Unwrapped</a> value.</p><h4 class="">Parameters</h4><div class="table"><div class="table-row" data-filterable-current=":exposed-dao:dokkaHtmlPartial/main" data-filterable-set=":exposed-dao:dokkaHtmlPartial/main"><div class="main-subrow keyValue "><div class=""><span class="inline-flex"><div><u><span><span>transformer</span></span></u></div></span></div><div><div class="title"><p class="paragraph">An instance of <a href="../../../exposed-core/org.jetbrains.exposed.sql/-column-transformer/index.html">ColumnTransformer</a> to handle the transformations.</p></div></div></div></div></div><h4 class="">Samples</h4>org.jetbrains.exposed.sql.tests.shared.entities.TransformationsTableorg.jetbrains.exposed.sql.tests.shared.entities.TransformationEntity<hr><div class="symbol monospace"><span class="token keyword">fun </span><span class="token operator">&lt;</span><a href="memoized-transform.html">Unwrapped</a><span class="token punctuation">, </span><a href="memoized-transform.html">Wrapped</a><span class="token operator">&gt; </span><a href="../../../exposed-core/org.jetbrains.exposed.sql/-column/index.html">Column</a><span class="token operator">&lt;</span><a href="memoized-transform.html">Unwrapped</a><span class="token operator">&gt;</span><span class="token punctuation">.</span><a href="memoized-transform.html"><span class="token function">memoizedTransform</span></a><span class="token punctuation">(</span><span class="parameters "><span class="parameter ">unwrap<span class="token operator">: </span><span class="token punctuation">(</span><a href="memoized-transform.html">Wrapped</a><span class="token punctuation">)</span><span class="token operator"> -&gt; </span><a href="memoized-transform.html">Unwrapped</a><span class="token punctuation">, </span></span><span class="parameter ">wrap<span class="token operator">: </span><span class="token punctuation">(</span><a href="memoized-transform.html">Unwrapped</a><span class="token punctuation">)</span><span class="token operator"> -&gt; </span><a href="memoized-transform.html">Wrapped</a></span></span><span class="token punctuation">)</span><span class="token operator">: </span><a href="../-entity-field-with-transform/index.html">EntityFieldWithTransform</a><span class="token operator">&lt;</span><a href="memoized-transform.html">Unwrapped</a><span class="token punctuation">, </span><a href="memoized-transform.html">Wrapped</a><span class="token operator">&gt;</span></div><p class="paragraph">Returns a <a href="../-entity-field-with-transform/index.html">EntityFieldWithTransform</a> delegate that will cache the transformed value on first read of this same stored <a href="memoized-transform.html">Unwrapped</a> value.</p><h4 class="">Parameters</h4><div class="table"><div class="table-row" data-filterable-current=":exposed-dao:dokkaHtmlPartial/main" data-filterable-set=":exposed-dao:dokkaHtmlPartial/main"><div class="main-subrow keyValue "><div class=""><span class="inline-flex"><div><u><span><span>unwrap</span></span></u></div></span></div><div><div class="title"><p class="paragraph">A pure function that converts a transformed value to a value that can be stored in this original column type.</p></div></div></div></div><div class="table-row" data-filterable-current=":exposed-dao:dokkaHtmlPartial/main" data-filterable-set=":exposed-dao:dokkaHtmlPartial/main"><div class="main-subrow keyValue "><div class=""><span class="inline-flex"><div><u><span><span>wrap</span></span></u></div></span></div><div><div class="title"><p class="paragraph">A pure function that transforms a value stored in this original column type.</p></div></div></div></div></div><h4 class="">Samples</h4>org.jetbrains.exposed.sql.tests.shared.entities.TransformationsTableorg.jetbrains.exposed.sql.tests.shared.entities.TransformationEntity<hr><div class="symbol monospace"><span class="token keyword">fun </span><span class="token operator">&lt;</span><a href="memoized-transform.html">TColumn</a><span class="token punctuation">, </span><a href="memoized-transform.html">Unwrapped</a><span class="token punctuation">, </span><a href="memoized-transform.html">Wrapped</a><span class="token operator">&gt; </span><a href="../-entity-field-with-transform/index.html">EntityFieldWithTransform</a><span class="token operator">&lt;</span><a href="memoized-transform.html">TColumn</a><span class="token punctuation">, </span><a href="memoized-transform.html">Unwrapped</a><span class="token operator">&gt;</span><span class="token punctuation">.</span><a href="memoized-transform.html"><span class="token function">memoizedTransform</span></a><span class="token punctuation">(</span><span class="parameters "><span class="parameter ">unwrap<span class="token operator">: </span><span class="token punctuation">(</span><a href="memoized-transform.html">Wrapped</a><span class="token punctuation">)</span><span class="token operator"> -&gt; </span><a href="memoized-transform.html">Unwrapped</a><span class="token punctuation">, </span></span><span class="parameter ">wrap<span class="token operator">: </span><span class="token punctuation">(</span><a href="memoized-transform.html">Unwrapped</a><span class="token punctuation">)</span><span class="token operator"> -&gt; </span><a href="memoized-transform.html">Wrapped</a></span></span><span class="token punctuation">)</span><span class="token operator">: </span><a href="../-entity-field-with-transform/index.html">EntityFieldWithTransform</a><span class="token operator">&lt;</span><a href="memoized-transform.html">TColumn</a><span class="token punctuation">, </span><a href="memoized-transform.html">Wrapped</a><span class="token operator">&gt;</span></div><p class="paragraph">Returns a <a href="../-entity-field-with-transform/index.html">EntityFieldWithTransform</a> that extends transformation of existing <a href="../-entity-field-with-transform/index.html">EntityFieldWithTransform</a> and caches the transformed value on first read.</p><h4 class="">Parameters</h4><div class="table"><div class="table-row" data-filterable-current=":exposed-dao:dokkaHtmlPartial/main" data-filterable-set=":exposed-dao:dokkaHtmlPartial/main"><div class="main-subrow keyValue "><div class=""><span class="inline-flex"><div><u><span><span>unwrap</span></span></u></div></span></div><div><div class="title"><p class="paragraph">A function that transforms the value to the wrapping type of previously defined transformation</p></div></div></div></div><div class="table-row" data-filterable-current=":exposed-dao:dokkaHtmlPartial/main" data-filterable-set=":exposed-dao:dokkaHtmlPartial/main"><div class="main-subrow keyValue "><div class=""><span class="inline-flex"><div><u><span><span>wrap</span></span></u></div></span></div><div><div class="title"><p class="paragraph">A function that transforms value to the wrapping type</p></div></div></div></div></div><h4 class="">Samples</h4>org.jetbrains.exposed.sql.tests.shared.entities.TransformationsTableorg.jetbrains.exposed.sql.tests.shared.entities.TransformationEntity</div></div>
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